Braddah, there are so few Hawaii gun dealers who will accept shipments from sellers on gunbroker.com, guns.com, or Gallery of Guns, that you need to be really kind and understanding to them. This means you might have to go into their stores and personally disassemble a weapon to determine barrel size, verify that a compensator is not a suppressor, prove that a shotgun is not a sawed-off variant, etc.
I have also discovered that these dealers do not like it if you show up a few hours after they get a package delivered with your name on the inside. Wait until they phone you, and are prepared to issue a bill of sale. This could take up to three days. It is what it is. I realize that, as a buyer, you might want to take possession of (say) a rifle on the same day it is delivered, but so does every other Tom, Dick or Harry.